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Landau-Zener tunneling of solitons.

Physical review. E 95:4-1 (2017) 042204

Authors:

Vazha Loladze, Ramaz Khomeriki

Abstract:

We consider Landau-Zener tunneling of solitons in a weakly coupled two-channel system, for this purpose we construct a simple mechanical system using two weakly coupled chains of nonlinear oscillators with gradually decreasing (first chain) and increasing (second chain) masses. The model allows us to consider soliton propagation and Landau-Zener tunneling between the chains. It is shown that soliton tunneling characteristics become drastically dependent on its amplitude in nonlinear regime. The validity of the developed tunneling theory is justified via comparison with direct numerical simulations on oscillator ladder system.

High redshift radio galaxies and divergence from the CMB dipole

(2017)

Authors:

J Colin, R Mohayaee, M Rameez, S Sarkar

Double-real corrections at O(伪伪s) to single gauge boson production

European Physical Journal C Springer 77:3 (2017) 187

Authors:

R Bonciani, Federico Buccioni, R Mondini, A Vicini

Symmetric and Asymmetric Reheating

(2017)

Authors:

Edward Hardy, James Unwin

Search for annihilating dark matter in the Sun with 3聽years of IceCube data: IceCube Collaboration

European Physical Journal C 77:3 (2017)

Authors:

MG Aartsen, M Ackermann, J Adams, JA Aguilar, M Ahlers, M Ahrens, D Altmann, K Andeen, T Anderson, I Ansseau, G Anton, M Archinger, C Arg眉elles, J Auffenberg, S Axani, X Bai, SW Barwick, V Baum, R Bay, JJ Beatty, J BeckerTjus, KH Becker, S BenZvi, D Berley, E Bernardini, A Bernhard, DZ Besson, G Binder, D Bindig, M Bissok, E Blaufuss, S Blot, C Bohm, M B枚rner, F Bos, D Bose, S B枚ser, O Botner, J Braun, L Brayeur, HP Bretz, S Bron, A Burgman, T Carver, M Casier, E Cheung, D Chirkin, A Christov, K Clark, L Classen, S Coenders, GH Collin, JM Conrad, DF Cowen, R Cross, M Day, JPAM de Andr茅, C De Clercq, E delPinoRosendo, H Dembinski, S De Ridder, P Desiati, KD de Vries, G de Wasseige, M de With, T DeYoung, JC D铆az-V茅lez, V di Lorenzo, H Dujmovic, JP Dumm, M Dunkman, B Eberhardt, T Ehrhardt, B Eichmann, P Eller, S Euler, PA Evenson, S Fahey, AR Fazely, J Feintzeig, J Felde, K Filimonov, C Finley, S Flis, CC F枚sig, A Franckowiak, E Friedman, T Fuchs, TK Gaisser, J Gallagher, L Gerhardt, K Ghorbani, W Giang, L Gladstone, T Glauch, T Gl眉senkamp

Abstract:

漏 2017, The Author(s). We present results from an analysis looking for dark matter annihilation in the Sun with the IceCube neutrino telescope. Gravitationally trapped dark matter in the Sun鈥檚 core can annihilate into Standard Model particles making the Sun a source of GeV neutrinos. IceCube is able to detect neutrinos with energies > 100聽GeV while its low-energy infill array DeepCore extends this to > 10聽GeV. This analysis uses data gathered in the austral winters between May 2011 and May 2014, corresponding to 532 days of livetime when the Sun, being below the horizon, is a source of up-going neutrino events, easiest to discriminate against the dominant background of atmospheric muons. The sensitivity is a factor of two to four better than previous searches due to additional statistics and improved analysis methods involving better background rejection and reconstructions. The resultant upper limits on the spin-dependent dark matter-proton scattering cross section reach down to 1.46 脳 10 - 5 聽pb for a dark matter particle of mass 500聽GeV annihilating exclusively into 蟿 + 蟿 - particles. These are currently the most stringent limits on the spin-dependent dark matter-proton scattering cross section for WIMP masses above 50聽GeV.